A photovoltaic power station monitoring system, method, product and storage medium

Abstract

The embodiments of the present application provide a monitoring system, method, product and storage medium for a photovoltaic power station. The system includes: multiple temperature detection sensor terminals, a LoRaWAN communication gateway and a server; the LoRaWAN communication gateway is connected to the sensor terminal and the server respectively; the sensor terminal is used to obtain temperature data of each monitoring point of the photovoltaic power station, and send the temperature data to the server through the LoRaWAN communication gateway; the server is used to receive the temperature data and perform real-time online detection of the equipment corresponding to each monitoring point based on the temperature data.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic power station monitoring, and in particular to a photovoltaic power station monitoring system, method, product and storage medium. Background Art

[0002] Currently, the inspection of photovoltaic power stations mainly relies on manual work. The main contents of the inspection include monitoring the temperature and operating status of photovoltaic panels, the operating status of inverters and node temperatures, and also checking the node temperatures of key equipment such as distribution boxes and transformer boxes. In addition, the temperature detection of equipment such as knife switches is also an important part of the inspection. At present, there are many mature technical solutions on the market, including handheld inspection monitoring equipment and automatic robot monitoring equipment.

[0003] However, these detection methods are highly dependent on human resources, and the deployment and equipment costs of automatic inspection robots are relatively expensive. Given that photovoltaic power stations cover a large area, have many monitoring nodes, and have dense temperature sensor nodes, wireless network coverage is under great pressure. Therefore, temperature node monitoring of a large number of devices still faces many challenges.

[0004] Therefore, there is an urgent need to develop a low-cost, wide-coverage, multi-temperature node monitoring technical means to realize online real-time temperature detection of photovoltaic power stations, photovoltaic panels, inverters, transformer boxes and other equipment, so as to effectively solve the problem of huge workload of manual inspections in photovoltaic power stations. Summary of the invention

[0005] In order to solve the existing technical problems, the embodiments of the present application provide a monitoring system, method, product and storage medium for a photovoltaic power station.

[0006] To achieve the above purpose, the technical solution of the embodiment of the present application is implemented as follows:

[0007] The embodiment of the present application provides a monitoring system for a photovoltaic power station, the system comprising: a plurality of temperature detection sensor terminals, a Long Range Wide Area Network (LoRaWAN) communication gateway and a server; the LoRaWAN communication gateway is connected to the sensor terminal and the server respectively;

[0008] The sensor terminal is used to obtain temperature data of each monitoring point of the photovoltaic power station and send the temperature data to the server through the LoRaWAN communication gateway;

[0009] The server is used to receive the temperature data and perform real-time online detection on the equipment corresponding to each monitoring point based on the temperature data.

[0010] In the above scheme, the sensor terminal includes a sensor and a sensor plug; the sensor and the sensor plug are connected via an extension line; and the sensor can be inserted into the sensor plug.

[0011] In the above scheme, the sensor includes a thermopile sensor and a thermistor signal sensor; wherein,

[0012] The thermopile sensor is used to collect temperature data of the monitoring point in a non-contact manner;

[0013] The thermistor signal sensor is used to collect temperature data of contact monitoring points.

[0014] In the above solution, the sensor terminal further includes a selection switch; one end of the selection switch is connected to the sensor plug;

[0015] The selection switch is used to connect a sensor corresponding to the type configuration parameter based on the type configuration parameter of the sensor set by the user.

[0016] In the above scheme, the sensor terminal also includes a thermopile sensor operational amplifier circuit and a thermistor signal amplifier;

[0017] In the case where the sensor connected to the type configuration parameter is the thermopile sensor, the other end of the selection switch is connected to the thermopile sensor operational amplifier circuit;

[0018] In the case that the sensor connected to the type configuration parameter is the thermistor signal sensor, the other end of the selection switch is connected to the thermistor signal amplifier.

[0019] In the above scheme, the sensor terminal further includes a multiplexer, a microcontroller unit (MCU) and a power control circuit; the multiplexer is respectively connected to the thermopile sensor operational amplifier circuit, the thermistor signal sensor, and the MCU; the MCU is connected to the power control circuit;

[0020] The multiplexer is used to obtain the acquisition frequency of the set temperature of the thermopile sensor and / or the thermistor signal sensor;

[0021] The MCU is used to periodically control the opening of multiple signal sources in the multiplexer in sequence based on the frequency.

[0022] In the above solution, the sensor terminal further includes a power control circuit and a battery; the power control circuit is connected to the MCU and the battery respectively;

[0023] The MCU is also used to control the power control circuit to supply electricity in the battery to the thermopile sensor, the thermopile sensor operational amplifier circuit, the thermistor signal sensor, and the thermistor signal amplifier.

[0024] In the above solution, the MCU includes at least one analog-to-digital converter (ADC); the ADC is connected to the multiplexer;

[0025] The ADC is used to measure the collected signal in the thermopile sensor operational amplifier circuit or the thermistor signal amplifier to obtain a voltage parameter; and convert the voltage parameter into the temperature data.

[0026] In the above solution, the terminal further includes a battery; the battery is connected to the MCU;

[0027] The MCU is also used to control the signal source corresponding to the acquired signal in the multiplexer to be turned off after the acquisition of the acquired signal is completed.

[0028] In the above solution, the sensor terminal further includes a LoRaWAN communication module; the LoRaWAN communication module is connected to the MCU;

[0029] The LoRaWAN communication module is used to send the temperature data to the LoRaWAN communication gateway.

[0030] The embodiment of the present application provides a monitoring method for a photovoltaic power station, which is applied to the monitoring system of the photovoltaic power station described above; the method comprises:

[0031] Obtaining temperature data of each monitoring point of the photovoltaic power station, and sending the temperature data to a server via a LoRaWAN communication gateway;

[0032] The temperature data is received, and based on the temperature data, real-time online detection is performed on the equipment corresponding to each monitoring point.

[0033] In the above solution, the step of obtaining the temperature data of each monitoring point of the photovoltaic power station includes:

[0034] The collected signal in the thermopile sensor operational amplifier circuit or the thermistor signal amplifier is measured to obtain voltage parameters;

[0035] The voltage parameter is converted into the temperature data.

[0036] The present application also provides a computer program product, including a computer program, which implements any step of the above method when executed by a processor.

[0037] The present application also provides a storage medium on which a computer program is stored, and when the computer program is executed by a processor, any step of the above-mentioned method is implemented.

[0038] The embodiment of the present application provides a monitoring system, method, product and storage medium for a photovoltaic power station, the system comprising: a plurality of temperature detection sensor terminals, a LoRaWAN communication gateway and a server; the LoRaWAN communication gateway is connected to the sensor terminal and the server respectively; the sensor terminal is used to obtain the temperature data of each monitoring point of the photovoltaic power station, and send the temperature data to the server through the LoRaWAN communication gateway; the server is used to receive the temperature data, and perform real-time online detection of the equipment corresponding to each monitoring point based on the temperature data. The technical solution of the embodiment of the present application is adopted, the temperature data of the photovoltaic power station is obtained through the terminal, the temperature data of each monitoring point of the photovoltaic power station is obtained through each sensor terminal, and the temperature data is sent to the server through the LoRaWAN communication gateway; the server receives the temperature data, and performs real-time online detection of the equipment corresponding to each monitoring point based on the temperature data. That is, a low-cost, wide-coverage, multi-temperature node monitoring technical means is provided, which realizes the online and real-time detection of the temperature of various equipment such as photovoltaic power stations, photovoltaic panels, inverters, transformer boxes, etc., thereby effectively solving the problem of the huge workload of manual inspections in photovoltaic power stations. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 A schematic diagram of a monitoring system for a photovoltaic power station provided in an embodiment of the present application;

[0040] Figure 2 A schematic diagram of a sensor terminal for temperature detection in a monitoring system of a photovoltaic power station provided in an embodiment of the present application;

[0041] Figure 3 A schematic diagram of a thermopile infrared sensor in a sensor terminal provided in an embodiment of the present application;

[0042] Figure 4 A schematic diagram of a thermistor sensor in a sensor terminal provided in an embodiment of the present application;

[0043] Figure 5 A schematic diagram of the structure of a sensor terminal for temperature detection in a monitoring system of a photovoltaic power station provided in an embodiment of the present application;

[0044] Figure 6This is a schematic diagram of an application scenario of a monitoring system for a photovoltaic power station in an embodiment of the present application;

[0045] Figure 7 is a schematic diagram of a sensor probe of a sensor terminal in an embodiment of the present application;

[0046] Figure 8 is another schematic diagram of a sensor probe of the sensor terminal in the embodiment of the present application;

[0047] Fig. 9 is a schematic diagram of the structure of the sensor terminal in an embodiment of the present application;

[0048] Fig.10 It is a schematic diagram of the working process of the detection system of the embodiment of the present application;

[0049] Fig.11 A schematic diagram of the implementation process of a photovoltaic power station monitoring method according to an embodiment of the present application;

[0050] Fig.12 This is a schematic diagram of the structure of the monitoring equipment of the photovoltaic power station according to the embodiment of the present application. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the specific technical solution of the invention will be further described in detail below in conjunction with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

[0052] The present application provides a monitoring system for a photovoltaic power station. Figure 1 A schematic diagram of a monitoring system for a photovoltaic power station provided in an embodiment of the present application; Figure 2 A schematic diagram of a sensor terminal for temperature detection in a monitoring system of a photovoltaic power station provided in an embodiment of the present application; Figure 3 A schematic diagram of a thermopile infrared sensor in a sensor terminal provided in an embodiment of the present application; Figure 4 A schematic diagram of a thermistor sensor in a sensor terminal provided in an embodiment of the present application; Figure 5 A schematic diagram of the structure of a sensor terminal for temperature detection in a monitoring system of a photovoltaic power station provided in an embodiment of the present application; Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 It is understood that the system 100 includes: a plurality of temperature detection sensor terminals 101, a LoRaWAN communication gateway 102 and a server 103; the LoRaWAN communication gateway 102 is connected to the sensor terminal 101 and the server 103 respectively;

[0053] The sensor terminal 101 is used to obtain temperature data of each monitoring point of the photovoltaic power station, and send the temperature data to the server 103 through the LoRaWAN communication gateway 102;

[0054] The server 103 is used to receive the temperature data and perform real-time online detection on the equipment corresponding to each monitoring point based on the temperature data.

[0055] It should be noted that the monitoring system 100 of the photovoltaic power station can be determined according to actual conditions and is not limited here. As an example, the monitoring system 100 of the photovoltaic power station can specifically be a photovoltaic power station temperature monitoring system. In practical applications, the photovoltaic power station temperature monitoring system can also be a multi-node low-power photovoltaic power station temperature monitoring system based on LoRaWAN.

[0056] The specific number of the multiple temperature detection sensor terminals 101 can be determined according to actual conditions and is not limited here. As an example, the specific number of the multiple temperature detection sensor terminals 101 can be 3 or 16. In practical applications, the temperature detection sensor terminal 101 can also be called a temperature detection sensor terminal. The temperature detection sensor terminal 101 may include a LoRaWAN communication module; the LoRaWAN communication module can communicate with the LoRaWAN communication gateway 102.

[0057] The LoRaWAN communication gateway 102 can be determined according to actual conditions and is not limited here.

[0058] The server 103 may be any server and is not limited here. In practical applications, the server 103 may be a network cloud platform.

[0059] The LoRaWAN communication gateway 102 is connected to the sensor terminal 101 and the server 103 respectively, and the connection can be determined according to the actual situation and is not limited here. As an example, the connection can be a wired connection or a wireless connection; wherein the wired connection can be a wire connection capable of transmitting data; the wireless connection can be a short-range communication technology, such as Bluetooth, Zigbee, etc.; or a long-range communication technology, such as Wireless Fidelity (WiFi) connection.

[0060] The specific acquisition process of the temperature data of each monitoring point of the photovoltaic power station can be determined according to actual conditions and is not limited here. As an example, the temperature data of each monitoring point of the photovoltaic power station can be obtained by measuring the collected signal in the thermopile sensor operational amplifier circuit or thermistor signal amplifier to obtain a voltage parameter; and converting the voltage parameter into the temperature data.

[0061] The specific detection process of the real-time online detection of the equipment corresponding to each monitoring point based on the temperature data can be determined according to the actual situation and is not limited here. As an example, the real-time online detection of the equipment corresponding to each monitoring point based on the temperature data can be to perform real-time online detection of whether there is a temperature abnormality problem on the equipment corresponding to each monitoring point based on the temperature data, and to give a timely alarm reminder in the event of a temperature abnormality problem; wherein, the equipment corresponding to each monitoring point may include solar panels, inverters, cables, booster stations and other equipment for monitoring photovoltaic stations. In actual applications, generally, when the temperature data exceeds 80 degrees Celsius, there is a temperature abnormality problem in the solar panels, inverters, cables, booster stations and other equipment for monitoring photovoltaic stations.

[0062] In practical applications, as an example, the system consists of a temperature detection sensor terminal, a LoRaWAN communication gateway, and a network cloud platform.

[0063] During the system operation process, the temperature detection sensor terminal periodically collects temperature sensor data and sends it to the cloud platform through the LoRaWAN gateway. The LoRaWAN communication gateway communicates data with the network cloud platform through Ethernet communication.

[0064] In the embodiment of the present application, each sensor terminal obtains the temperature data of each monitoring point of the photovoltaic power station, and sends the temperature data to the server through the LoRaWAN communication gateway; the server receives the temperature data and performs real-time online detection of the equipment corresponding to each monitoring point based on the temperature data. That is, a low-cost, wide-coverage, multi-temperature node monitoring technical means is provided, which realizes the online real-time detection of the temperature of photovoltaic power stations, photovoltaic panels, inverters, transformer boxes and other equipment, thereby effectively solving the problem of the huge workload of manual inspections in photovoltaic power stations.

[0065] In an optional embodiment of the present application, the sensor terminal 101 includes a sensor 1011 and a sensor plug 1012 ; the sensor 1011 and the sensor plug 1012 are connected via an extension line 1013 ; and the sensor 1011 can be inserted into the sensor plug 1012 .

[0066] It should be noted that the type of the sensor 1011 can be determined according to actual conditions and is not limited here. As an example, the sensor 1011 may include a thermopile sensor and a thermistor signal sensor; wherein the thermopile sensor may also be called a thermopile infrared sensor; and the thermistor signal sensor may also be called a thermistor sensor.

[0067] In an optional embodiment of the present application, the sensor 1011 includes a thermopile sensor 10111 and a thermistor signal sensor 10112; wherein,

[0068] The thermopile sensor 10111 is used to collect temperature data of the monitoring point in a non-contact manner;

[0069] The thermistor signal sensor 10112 is used to collect temperature data of contact monitoring points.

[0070] It should be noted that the thermopile sensor 10111 may also be called a thermopile infrared sensor; the thermistor signal sensor 10112 may also be called a thermistor sensor.

[0071] In practical applications, the sensor plug adopts a universal plug structure design, and both thermopile sensors and thermistor sensors can be inserted into the sensor plug. The thermopile infrared sensor is used for non-contact temperature detection of temperature measurement points, and the thermistor sensor is used for contact temperature detection of temperature measurement points.

[0072] In an optional embodiment of the present application, the sensor terminal 101 further includes a selection switch 1014; one end of the selection switch 1014 is connected to the sensor plug 1012;

[0073] The selection switch 1014 is used to connect a sensor corresponding to the type configuration parameter based on the type configuration parameter of the sensor set by the user.

[0074] In this embodiment, the selection switch 1014 may be any selection switch, which is not limited here. As an example, the selection switch 1014 may be a multi-contact switch.

[0075] One end of the selection switch 1014 is connected to the sensor plug 1012; the connection can be determined according to actual conditions and is not limited here. As an example, the connection can be a wired connection or a wireless connection; wherein the wired connection can be a wire connection capable of transmitting data; the wireless connection can be a short-range communication technology, such as Bluetooth, Zigbee, etc.; or a long-range communication technology, such as WiFi connection.

[0076] The sensor corresponding to the type configuration parameter based on the type configuration parameter of the sensor configured by the user can be determined according to actual conditions and is not limited here. As an example, a thermopile sensor or a thermistor sensor can be inserted into the sensor plug, and the type of the configured monitoring temperature sensor is manually selected through the selection switch.

[0077] In an optional embodiment of the present application, the sensor terminal 101 further includes a thermopile sensor operational amplifier circuit 1015 and a thermistor signal amplifier 1016;

[0078] In the case where the sensor connected to the type configuration parameter is the thermopile sensor 10111, the other end of the selection switch 1014 is connected to the thermopile sensor operational amplifier circuit 1015;

[0079] In the case where the sensor corresponding to the type configuration parameter is the thermistor signal sensor 10112 , the other end of the selection switch 1014 is connected to the thermistor signal amplifier 1016 .

[0080] In practical applications, the thermopile sensor 10111 is inserted into a sensor plug, and the sensor plug is connected to the thermopile sensor operational amplifier circuit 1015 through the selection switch 1014; the thermistor signal sensor 10112 is inserted into a sensor plug, and the sensor plug is connected to the thermistor signal amplifier 1016 through the selection switch 1014.

[0081] In an optional embodiment of the present application, the sensor terminal 101 further includes a multiplexer 1017 and a microcontroller unit MCU1018; the multiplexer 1017 is respectively connected to the thermopile sensor operational amplifier circuit 1015, the thermistor signal sensor 10112, and the MCU1018;

[0082] The multiplexer 1017 is used to obtain the acquisition frequency of the set temperature of the thermopile sensor 10111 and / or the thermistor signal sensor 10112;

[0083] The MCU 10117 is used to periodically control the opening of multiple signal sources in the multiplexer 1017 in sequence based on the frequency.

[0084] In this embodiment, the specific number of channels of the multiplexer 1017 can be determined according to actual conditions and is not limited here. As an example, the specific number of channels of the multiplexer 1017 can be 16 channels, which can be called a 16-channel multiplexer.

[0085] The MCU 1018 can be determined according to actual conditions and is not limited here. As an example, the MCU 1018 can also be called an MCU processor.

[0086] The multiplexer 1017 is connected to the thermopile sensor operational amplifier circuit 1015, the thermistor signal sensor 10112, and the MCU 1018 respectively; the connection can be determined according to the actual situation and is not limited here. As an example, the connection can be a wired connection or a wireless connection; wherein the wired connection can be a wire connection capable of transmitting data; the wireless connection can be a short-distance communication technology, such as Bluetooth, Zigbee, etc.; or a long-distance communication technology, such as WiFi connection, can be used.

[0087] The specific acquisition process of the acquisition frequency of the set temperature of the thermopile sensor 10111 and / or the thermistor signal sensor 10112 can be determined according to the actual situation, and is not limited here. Among them, the set temperature can be understood as the target temperature, and the target temperature can be determined according to the actual situation, and is not limited here. As an example, the target temperature can be 80 degrees Celsius. The acquisition frequency can be determined according to the actual situation, and is not limited here. As an example, the acquisition frequency can be once every 20 to 30 minutes.

[0088] The specific control process of periodically controlling the opening of the multiple signal sources in the multiplexer 1017 based on the frequency can be determined according to actual conditions and is not limited here. As an example, the periodic control of the opening of the multiple signal sources in the multiplexer 1017 based on the frequency can be to control the opening of the multiple signal sources in the multiplexer 1017 every 20 to 30 minutes.

[0089] In an optional embodiment of the present application, the sensor terminal 101 further includes a power control circuit 1019 and a battery 1020; the power control circuit 1019 is connected to the MCU 1018 and the battery 1020 respectively; the MCU 1018 is connected to the power control circuit 1019;

[0090] The MCU 1018 is also used to control the power control circuit 1019 to supply the electricity in the battery 1020 to the thermopile sensor 10111 , the thermopile sensor operational amplifier circuit 1015 , the thermistor signal sensor 10112 , and the thermistor signal amplifier 1016 .

[0091] It should be noted that the battery 1020 can be determined according to actual conditions and is not limited here. As an example, the battery 1020 can be a lithium battery.

[0092] The power control circuit 1019 is connected to the MCU 1018 and the battery 1020 respectively; the connection can be determined according to the actual situation and is not limited here. As an example, the connection can be a wired connection or a wireless connection; wherein the wired connection can be a wire connection capable of transmitting data; the wireless connection can be a short-range communication technology, such as Bluetooth, Zigbee, etc.; or a long-range communication technology, such as WiFi connection, can be used.

[0093] The MCU 1018 is connected to the power control circuit 1019; the connection can be determined according to actual conditions and is not limited here. As an example, the connection can be a wired connection or a wireless connection; wherein the wired connection can be a wire connection capable of transmitting data; the wireless connection can be a short-range communication technology, such as Bluetooth, Zigbee, etc.; or a long-range communication technology, such as WiFi connection.

[0094] In actual application, the system is connected to thermopile sensors and thermistor sensors, and the frequency of temperature acquisition is set. The multiplexer periodically opens 16 signal sources in sequence and controls the power control circuit to power the corresponding amplifier circuit and sensor.

[0095] In an optional embodiment of the present application, the MCU 1018 includes at least one analog-to-digital converter ADC; the ADC is connected to the multiplexer 1017;

[0096] The ADC is used to measure the collected signal in the thermopile sensor operational amplifier circuit or the thermistor signal amplifier to obtain a voltage parameter; and convert the voltage parameter into the temperature data.

[0097] It should be noted that the specific number of the ADCs can be determined according to actual conditions and is not limited here. As an example, the specific number of the ADCs can be 2, which are respectively recorded as ADC1 and ADC2.

[0098] The ADC is connected to the multiplexer 1017; the connection can be determined according to actual conditions and is not limited here. As an example, the connection can be a wired connection or a wireless connection; wherein the wired connection can be a wire connection capable of transmitting data; the wireless connection can be a short-range communication technology, such as Bluetooth, Zigbee, etc.; or a long-range communication technology, such as WiFi connection.

[0099] The specific measurement process of measuring the collected signal in the thermopile sensor operational amplifier circuit or the thermistor signal amplifier to obtain the voltage parameter can be determined according to actual conditions and is not limited here. As an example, the measuring the collected signal in the thermopile sensor operational amplifier circuit or the thermistor signal amplifier to obtain the voltage parameter can be measuring the voltage of the collected signal in the thermopile sensor operational amplifier circuit or the thermistor signal amplifier to obtain the voltage parameter.

[0100] Converting the voltage parameter into the temperature data can be understood as performing conversion processing on the voltage parameter to obtain the temperature data.

[0101] In practical applications, the analog-to-digital converter (ADC) of a microcontroller (MCU) measures the voltage of an analog circuit and converts the measurement results into temperature values, which are then recorded in a local storage area.

[0102] In an optional embodiment of the present application, the MCU 1018 is further configured to control the signal source corresponding to the acquired signal in the multiplexer to be turned off after the acquisition of the acquired signal is completed.

[0103] In actual applications, when one channel of signal is collected, the multiplexer will turn off the power supply of the signal circuit. After all 16 channels of signal are collected, the LoRaWAN module uploads the data frame to the communication gateway.

[0104] In an optional embodiment of the present application, the sensor terminal 101 further includes a LoRaWAN communication module 1021; the LoRaWAN communication module 1021 is connected to the MCU 1018;

[0105] The LoRaWAN communication module is used to send the temperature data to the LoRaWAN communication gateway 102.

[0106] In this embodiment, the LoRaWAN communication module 1021 can communicate with the LoRaWAN communication gateway 102.

[0107] In order to cope with the challenge of multiple and widely distributed temperature detection equipment points in daily inspection work of photovoltaic stations, the present invention proposes a multi-node photovoltaic station temperature detection system based on LoRaWAN Internet of Things technology. Figure 6 To understand, Figure 6 The following is a schematic diagram of an application scenario of a monitoring system for a photovoltaic power station in an embodiment of the present application. The system consists of a temperature detection sensor terminal, a LoRaWAN communication gateway, and a network cloud platform.

[0108] During the system operation process, the temperature detection sensor terminal periodically collects temperature sensor data and sends it to the cloud platform through the LoRaWAN gateway. The LoRaWAN communication gateway communicates data with the network cloud platform through Ethernet communication.

[0109] Figure 7 is a schematic diagram of a sensor probe of a sensor terminal in an embodiment of the present application; Figure 8 It is another sensor probe schematic diagram of the sensor terminal in the embodiment of the present application; the sensor plug adopts the structural design of a universal sensor plug, and both the thermopile sensor and the thermistor signal sensor can be inserted into the sensor plug, wherein the thermopile infrared sensor is used for non-contact temperature detection of temperature measuring points, and the thermistor signal sensor is used for contact temperature detection of temperature measuring points.

[0110] Fig. 9 It is a structural schematic diagram of the sensor terminal in the embodiment of the present application. The system consists of a sensor plug, a selection switch, a thermistor signal amplifier, a thermopile sensor operational amplifier circuit, an MCU processor, a 16-way multiplexer, a power control circuit, and a lithium battery.

[0111] During the operation of the system, either the thermopile sensor or thermistor signal sensor can be inserted into the sensor plug, and the type of the configured monitoring temperature sensor can be manually selected through the selection switch; the thermistor signal sensor probe is connected to the thermistor signal amplifier, and the thermopile sensor is connected to the thermopile sensor operational amplifier circuit. Both the thermistor signal amplifier and the thermopile sensor operational amplifier circuit are connected to the ADC analog-to-digital converter of the MCU processor through a 16-way multiplexer; the system uses two ADC analog-to-digital converters of the MCU, namely ADC1 and ADC2; the system can collect 16 sensor signals at the same time, and the thermopile sensor and thermistor signal sensor can be freely selected according to the project site requirements.

[0112] Fig.10 It is a schematic diagram of the workflow of the detection system of the embodiment of the present application, which is connected to the thermopile sensor and thermistor signal sensor, and the temperature collection frequency is set. The multiplexer periodically turns on the 16 signal sources in turn, and controls the power control circuit to power the corresponding amplifier circuit and sensor. The analog-to-digital converter (ADC) of the microcontroller (MCU) measures the voltage of the analog circuit and converts the measurement results into temperature values, and then records these data in the local storage area. When one signal is collected, the multiplexer will turn off the power supply of the signal circuit. After all 16 signals are collected, the LoRaWAN module uploads the data frame to the communication gateway.

[0113] This application, first of all, adopts LoRaWAN technology for networking and is applied in the field of large-scale outdoor sensor monitoring technology, which can achieve low-cost wide-area network coverage and has the advantages of low engineering cost and simple operation and maintenance. Secondly, the invention integrates modular temperature sensors, including probes and infrared non-contact temperature detection probes, to meet the testing needs of multiple temperature points on site. Thirdly, the sensor nodes can be powered by replaceable batteries, which effectively solves the problem of complex engineering implementation costs on site and has good promotion potential.

[0114] Based on the above-mentioned monitoring system 100 for a photovoltaic power station, the present application further provides a monitoring method for a photovoltaic power station, which is applied to the above-mentioned monitoring system 100 for a photovoltaic power station. Fig.11 This is a schematic diagram of the implementation process of a photovoltaic power station monitoring method according to an embodiment of the present application. Fig.11 As shown, the method includes:

[0115] Step S1101, obtaining temperature data of each monitoring point of the photovoltaic power station, and sending the temperature data to a server through a LoRaWAN communication gateway.

[0116] Step S1102: receiving the temperature data, and performing real-time online detection on the equipment corresponding to each monitoring point based on the temperature data.

[0117] It should be noted that the monitoring method of the photovoltaic power station can be determined according to actual conditions and is not limited here. As an example, the monitoring method of the photovoltaic power station can specifically be a photovoltaic power station temperature monitoring method. In practical applications, the photovoltaic power station temperature monitoring method can also be a multi-node low-power photovoltaic power station temperature monitoring method based on LoRaWAN.

[0118] In step S1101, the specific acquisition process of the temperature data of each monitoring point of the photovoltaic power station can be determined according to actual conditions and is not limited here. As an example, the temperature data of each monitoring point of the photovoltaic power station can be obtained by measuring the collected signal in the thermopile sensor operational amplifier circuit or thermistor signal amplifier to obtain a voltage parameter; and converting the voltage parameter into the temperature data.

[0119] In step S1102, the specific detection process of the real-time online detection of the equipment corresponding to each monitoring point based on the temperature data can be determined according to the actual situation, and is not limited here. As an example, the real-time online detection of the equipment corresponding to each monitoring point based on the temperature data can be to detect whether there is an electric shock safety problem based on the temperature data, and to promptly alarm and remind if there is an electric shock safety problem. In actual applications, generally, if the temperature data exceeds 80 degrees Celsius, there is an electric shock safety problem.

[0120] In the embodiment of the present application, each sensor terminal obtains the temperature data of each monitoring point of the photovoltaic power station, and sends the temperature data to the server through the LoRaWAN communication gateway; the server receives the temperature data and performs real-time online detection of the equipment corresponding to each monitoring point based on the temperature data. That is, a low-cost, wide-coverage, multi-temperature node monitoring technical means is provided, which realizes the online real-time detection of the temperature of photovoltaic power stations, photovoltaic panels, inverters, transformer boxes and other equipment, thereby effectively solving the problem of the huge workload of manual inspections in photovoltaic power stations.

[0121] In an optional embodiment of the present application, the acquiring temperature data of each monitoring point of the photovoltaic power station includes:

[0122] The collected signal in the thermopile sensor operational amplifier circuit or the thermistor signal amplifier is measured to obtain voltage parameters;

[0123] The voltage parameter is converted into the temperature data.

[0124] It should be noted that the specific measurement process in which the collected signal in the thermopile sensor operational amplifier circuit or the thermistor signal amplifier is measured to obtain the voltage parameter can be determined according to actual conditions and is not limited here. As an example, the collected signal in the thermopile sensor operational amplifier circuit or thermistor signal amplifier is measured to obtain the voltage parameter can be measured on the collected signal in the thermopile sensor operational amplifier circuit or thermistor signal amplifier to obtain the voltage parameter.

[0125] Converting the voltage parameter into the temperature data can be understood as performing conversion processing on the voltage parameter to obtain the temperature data.

[0126] The detailed process of the monitoring method of the photovoltaic power station of the present application can be understood in conjunction with the monitoring system of the photovoltaic power station described above, and will not be described in detail here.

[0127] An embodiment of the present invention further provides a computer program product, including a computer program, and when the computer program is executed by a processor, the steps of the above method embodiment are implemented.

[0128] An embodiment of the present application also provides a computer-readable medium having a computer program stored thereon. When the computer program is executed by a processor, the steps of the above-mentioned method embodiment are implemented. The aforementioned storage medium includes: a mobile storage device, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and other media that can store program codes.

[0129] It should be noted here that the description of the above storage medium and product embodiments is similar to the description of the above method embodiments, and has similar beneficial effects as the method embodiments. For technical details not disclosed in the storage medium and device embodiments of this application, please refer to the description of the method embodiments of this application for understanding.

[0130] It should be noted that Fig.12 Schematic diagram of the structure of the monitoring equipment of the photovoltaic power station of the present application embodiment. Fig.12 As shown, the monitoring device 1200 includes: a processor 1201 and a memory 1203 . Optionally, the monitoring device 1200 may also include a communication interface 1202 .

[0131] It can be understood that the memory 1203 can be a volatile memory or a non-volatile memory, and can also include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a magnetic random access memory (FRAM), a ferromagnetic random access memory, a flash memory, a magnetic surface memory, an optical disc, or a compact disc read-only memory (CD-ROM); the magnetic surface memory can be a disk memory or a tape memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), synchronous static random access memory (SSRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM, SyncLink Dynamic Random Access Memory), and direct RAMbus random access memory (DRRAM, Direct Rambus Random Access Memory).The memory 1203 described in the embodiments of the present application is intended to include but is not limited to these and any other suitable types of memories.

[0132] The method disclosed in the above embodiment of the present application can be applied to the processor 1201, or implemented by the processor 1201. The processor 1201 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the hardware integrated logic circuit or software instructions in the processor 1201. The above processor 1201 may be a general processor, a digital signal processor (DSP, Digital Signal Processor), or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The processor 1201 can implement or execute the methods, steps and logic block diagrams disclosed in the embodiments of the present application. The general processor can be a microprocessor or any conventional processor, etc. In combination with the steps of the method disclosed in the embodiment of the present application, it can be directly embodied as a hardware decoding processor to execute, or it can be executed by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium, which is located in the memory 1203, and the processor 1201 reads the information in the memory 1203 and completes the steps of the above method in combination with its hardware.

[0133] In an exemplary embodiment, the device may be implemented by one or more application specific integrated circuits (ASIC), DSP, programmable logic device (PLD), complex programmable logic device (CPLD), field programmable gate array (FPGA), general processor, controller, microcontroller (MCU), microprocessor, or other electronic components to execute the aforementioned method.

[0134] It should be understood that "one embodiment" or "an embodiment" mentioned throughout the specification means that specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. It should be understood that in various embodiments of the present application, the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application. The above-mentioned sequence numbers of the embodiments of the present application are only for description and do not represent the advantages and disadvantages of the embodiments.

[0135] It should be noted that, in this application, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0136] The methods disclosed in several method embodiments provided in this application can be arbitrarily combined without conflict to obtain new method embodiments.

[0137] The features disclosed in several product embodiments provided in this application can be arbitrarily combined without conflict to obtain new product embodiments.

[0138] The features disclosed in several method or device embodiments provided in this application can be arbitrarily combined without conflict to obtain new method embodiments or device embodiments.

[0139] The above is only an implementation method of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A monitoring system for a photovoltaic power station, characterized in that: The system comprises: a plurality of temperature detection sensor terminals, a LoRaWAN communication gateway and a server; the LoRaWAN communication gateway is connected to the sensor terminals and the server respectively; The sensor terminal is used to obtain temperature data of each monitoring point of the photovoltaic power station and send the temperature data to the server through the LoRaWAN communication gateway; The server is used to receive the temperature data and perform real-time online detection on the equipment corresponding to each monitoring point based on the temperature data.

2. The system according to claim 1, characterized in that The sensor terminal comprises a sensor and a sensor plug; the sensor and the sensor plug are connected via an extension line; and the sensor can be inserted into the sensor plug.

3. The system according to claim 2, characterized in that The sensor includes a thermopile sensor and a thermistor signal sensor; wherein, The thermopile sensor is used to collect temperature data of the monitoring point in a non-contact manner; The thermistor signal sensor is used to collect temperature data of contact monitoring points.

4. The system according to claim 3, characterized in that The sensor terminal further comprises a selection switch; one end of the selection switch is connected to the sensor plug; The selection switch is used to connect a sensor corresponding to the type configuration parameter based on the type configuration parameter of the sensor set by the user.

5. The system according to claim 4, characterized in that The sensor terminal also includes a thermopile sensor operational amplifier circuit and a thermistor signal amplifier; In the case where the sensor connected to the type configuration parameter is the thermopile sensor, the other end of the selection switch is connected to the thermopile sensor operational amplifier circuit; In the case that the sensor connected to the type configuration parameter is the thermistor signal sensor, the other end of the selection switch is connected to the thermistor signal amplifier.

6. The system according to claim 5, characterized in that The sensor terminal further comprises a multiplexer and a microcontroller unit MCU; the multiplexer is respectively connected to the thermopile sensor operational amplifier circuit, the thermistor signal sensor, and the MCU; The multiplexer is used to obtain the acquisition frequency of the set temperature of the thermopile sensor and / or the thermistor signal sensor; The MCU is used to periodically control the opening of multiple signal sources in the multiplexer in sequence based on the frequency.

7. The system according to claim 6, characterized in that The sensor terminal further comprises a power control circuit and a battery; the power control circuit is connected to the MCU and the battery respectively; The MCU is also used to control the power control circuit to supply electricity in the battery to the thermopile sensor, the thermopile sensor operational amplifier circuit, the thermistor signal sensor, and the thermistor signal amplifier.

8. The system according to claim 7, characterized in that The MCU includes at least one analog-to-digital converter ADC; the ADC is connected to the multiplexer; The ADC is used to measure the collected signal in the thermopile sensor operational amplifier circuit or the thermistor signal amplifier to obtain a voltage parameter; and convert the voltage parameter into the temperature data.

9. The system according to claim 8, characterized in that The MCU is also used to control the signal source corresponding to the acquired signal in the multiplexer to be turned off after the acquisition of the acquired signal is completed.

10. The system according to any one of claims 6 to 10, characterized in that: The sensor terminal also includes a LoRaWAN communication module; the LoRaWAN communication module is connected to the MCU; The LoRaWAN communication module is used to send the temperature data to the LoRaWAN communication gateway.

11. A method for monitoring a photovoltaic power station, characterized in that: Applicable to the photovoltaic power station monitoring system according to any one of claims 1 to 10; the method comprises: Obtaining temperature data of each monitoring point of the photovoltaic power station, and sending the temperature data to a server via a LoRaWAN communication gateway; The temperature data is received, and based on the temperature data, real-time online detection is performed on the equipment corresponding to each monitoring point.

12. The method according to claim 11, characterized in that The step of obtaining the temperature data of each monitoring point of the photovoltaic power station includes: The collected signal in the thermopile sensor operational amplifier circuit or the thermistor signal amplifier is measured to obtain voltage parameters; The voltage parameter is converted into the temperature data.

13. A computer program product, comprising a computer program, characterized in that The computer program implements the steps of the method according to any one of claims 11 to 12 when executed by a processor.

14. A storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 11 to 12 are implemented.

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